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| PartNumber | DS1818-20+ | DS1818-20 | DS1818-20/TR |
| Description | Supervisory Circuits 3.3V EconoReset w/Pushbutton | Supervisory Circuits 3.3V EconoReset w/Pushbutton | |
| Manufacturer | Maxim Integrated | Maxim Integrated | MAXIM |
| Product Category | Supervisory Circuits | Supervisory Circuits | PMIC - Supervisors |
| RoHS | Y | N | - |
| Type | Voltage Supervisory | Voltage Supervisory | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | TO-92-3 | TO-92-3 | - |
| Threshold Voltage | 2.55 V | 2.55 V | - |
| Number of Inputs Monitored | 1 Input | 1 Input | - |
| Output Type | Active Low, Open Drain | Active Low, Open Drain | - |
| Manual Reset | Manual Reset | Manual Reset | - |
| Watchdog Timers | No Watchdog | No Watchdog | - |
| Battery Backup Switching | No Backup | No Backup | - |
| Reset Delay Time | 250 ms | 250 ms | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Series | DS1818 | DS1818 | - |
| Packaging | Bulk | Bulk | - |
| Height | 4.95 mm (Max) | 4.95 mm (Max) | - |
| Length | 4.95 mm (Max) | 4.95 mm (Max) | - |
| Width | 3.94 mm (Max) | 3.94 mm (Max) | - |
| Brand | Maxim Integrated | Maxim Integrated | - |
| Overvoltage Threshold | 2.64 V | 2.64 V | - |
| Undervoltage Threshold | 2.47 V | 2.47 V | - |
| Chip Enable Signals | No Chip Enable | No Chip Enable | - |
| Operating Supply Current | 35 uA | 35 uA | - |
| Power Fail Detection | Yes | Yes | - |
| Product Type | Supervisory Circuits | Supervisory Circuits | - |
| Factory Pack Quantity | 2000 | 1 | - |
| Subcategory | PMIC - Power Management ICs | PMIC - Power Management ICs | - |
| Supply Voltage Min | 1 V | 1 V | - |
| Part # Aliases | 90-18180+020 DS1818 | 90-18180-020 DS1818 | - |
| Unit Weight | 0.016000 oz | 0.016000 oz | - |